Photosynthesis, let’s get into this

Another one from educationalrap.com, called Photosynthesis. My favorite verse goes:

The Calvin cycle, or dark reaction
Doesn’t need direct sunlight for it to run right.
CO2 from the air enters the chloroplast
Mixing with organic molecules for the last time
With the help of the enzyme RuBisCO
Carbon Fixation—I thought you knew this yo!
It forms a carbohydrate known as G3P
It’s created, recreated, and recycled you see